数字农科院2.0

Resistance of the CRISPR-Cas13a Gene-Editing System to Potato Spindle Tuber Viroid Infection in Tomato and Nicotiana benthamiana

文献类型： 外文期刊

作者： Ying Wei Khoo;Qingsong Wang;Shangwu Liu;Binhui Zhan;Tengfei Xu;Wenxia Lv;Guangjing Liu;Shifang Li;Zhixiang Zhang

作者机构：

关键词： Cas13a;gene editing;genetic engineering;guide RNAs;tomato;viroid

期刊名称： Viruses

ISSN： 1999-4915

年卷期： 2024 年 16 卷 9 期

页码：

收录情况： SCIE（2024版）

摘要： Gene-editing technology, specifically the CRISPR-Cas13a system, has shown promise in breeding plants resistant to RNA viruses. This system targets RNA and, theoretically, can also combat RNA-based viroids. To test this, the CRISPR-Cas13a system was introduced into tomato plants via transient expression and into Nicotiana benthamiana through transgenic methods, using CRISPR RNAs (crRNAs) targeting the conserved regions of both sense and antisense genomes of potato spindle tuber viroid (PSTVd). In tomato plants, the expression of CRISPR-Cas13a and crRNAs substantially reduced PSTVd accumulation and alleviated disease symptoms. In transgenic N. benthamiana plants, the PSTVd levels were lower as compared to wild-type plants. Several effective crRNAs targeting the PSTVd genomic RNA were also identified. These results demonstrate that the CRISPR-Cas13a system can effectively target and combat viroid RNAs, despite their compact structures.

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